Know how sometimes you start to get back in shape and then the next day — with sore muscles everywhere — you look at yourself in the mirror and say, “I’m too old for this?”

Yeah, we’re never doing that again, not now that we’ve seen 61-year-old Oscar winner JK Simmons killing it at the gym.

That’s right, the Whiplash star pretty much puts us all to shame with his ridiculously sculpted biceps, which workout buddy/trainer Aaron Williamson recently posted on Instagram for the rest of the world to see.

We don’t completely buy it… after all, Simmons does play Gotham’s Commissioner Gordon in the upcoming Justice League. And sharing scenes with some of those jacked-up superheroes would be motivation enough for anyone to hit the bench press.

Whatever his motivations, we’re in serious awe. Now if only we could get him to address that crazy facial hair…